P0491 Diagnostic Trouble Code Discussion for March 2007
Secondary AIR System Insufficient Flow Detected (Bank 1)
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| Help Request | Posted | |
| 2001 BMW 330i 3.0L Misfire, MIL Lamp on VIN: WBAAV53471 P0491: Auxiliary Bank1. ... my own Vehicles, This problem comes and goes. Service engine soon light comes on and sets codes P0491&P0492, Already replaced Both 02 sensors before catalityc comberter. Problem still exist. Light set on and off by Its... |
March 05, 2007 |
